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71 lines
1.8 KiB
Objective-C
71 lines
1.8 KiB
Objective-C
/*
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* GameChatKeyboardHandler.m, part of VCMI engine
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*
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* Authors: listed in file AUTHORS in main folder
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*
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* License: GNU General Public License v2.0 or later
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* Full text of license available in license.txt file, in main folder
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*
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*/
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#import "GameChatKeyboardHandler.h"
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static int watchReturnKey(void * userdata, SDL_Event * event);
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@interface GameChatKeyboardHandler ()
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@property (nonatomic) BOOL wasChatMessageSent;
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@end
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@implementation GameChatKeyboardHandler
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+ (void)sendKeyEventWithKeyCode:(SDL_KeyCode)keyCode
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{
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SDL_Event keyEvent;
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keyEvent.key = (SDL_KeyboardEvent){
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.type = SDL_KEYDOWN,
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.state = SDL_PRESSED,
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.keysym.sym = keyCode,
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};
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SDL_PushEvent(&keyEvent);
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}
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- (instancetype)init {
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self = [super init];
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__auto_type notificationCenter = NSNotificationCenter.defaultCenter;
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[notificationCenter addObserver:self selector:@selector(textDidBeginEditing:) name:UITextFieldTextDidBeginEditingNotification object:nil];
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[notificationCenter addObserver:self selector:@selector(textDidEndEditing:) name:UITextFieldTextDidEndEditingNotification object:nil];
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return self;
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}
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#pragma mark - Notifications
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- (void)textDidBeginEditing:(NSNotification *)n {
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self.wasChatMessageSent = NO;
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// watch for pressing Return to ignore sending Escape key after keyboard is closed
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SDL_AddEventWatch(watchReturnKey, (__bridge void *)self);
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}
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- (void)textDidEndEditing:(NSNotification *)n {
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// discard chat message
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if(!self.wasChatMessageSent)
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[[self class] sendKeyEventWithKeyCode:SDLK_ESCAPE];
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}
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@end
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static int watchReturnKey(void * userdata, SDL_Event * event)
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{
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if(event->type == SDL_KEYDOWN && event->key.keysym.scancode == SDL_SCANCODE_RETURN)
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{
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__auto_type self = (__bridge GameChatKeyboardHandler *)userdata;
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self.wasChatMessageSent = YES;
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SDL_DelEventWatch(watchReturnKey, userdata);
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}
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return 1;
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}
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